ofdm

说明：  C++ Primer中文版及题解,一本学习C++的好书.(C Primer and that the Chinese version of Solutions, a learning C books.)

在MATLAB上设计一个（2，1，3）卷积编码器和对应的采用维特比译码算法的译码器。编码器的生成多项式为：[1 0 1；1 1 1]。将编码器的输出经过一个高斯白噪声信道的结果作为译码器的输入，观察比较译码器输出和编码器输入，了解卷积码的容错性，并计算译码结果的误比特率.(A convolutional coder (2, 1, 3) and corresponding decoder using Vitby decoding algorithm are designed on MATLAB. The generating polynomial of encoder is: [1 01; 11 1]. The output of the encoder through a Gauss white noise channel as a result of the decoder input, compare the output of the decoder and encoder input, understand the fault tolerance of convolutional code, and calculate the decoding results of bit error rate.)

说明：  实现Massive MIMO容量分析的代码，相关文献为 Emil Bj?rnson Jakob Hoydis Luca Sanguinetti Massive MIMO has Unlimited Capacity IEEE Transactions on Wireless Communications(This is a code package is related to the follow scientific article Massive MIMO has Unlimited Capacity)

说明：  精心搜集的IQ解调方面的matlab程序和资料文档 非常好 快点下把(Carefully collected the IQ demodulation matlab program and data documentation is very good quickly download)

ctorrent源码实现，良好的源码架构和精干的代码组织。 (ctorrent source implementation of good source code structure and lean tissue.)

说明：  ：载波频率偏移是OFDM系统实现的关键问题之一。分析了OFDM 系统载频偏移估计的2 种算法，即利用循环前缀和训练序列方法。它们均为最大似然估计方法。分别讨论了它们的基本 思想、实现方法和仿真结果。可以看出基于循环前缀算法复杂度较小，精度不高，而基于训练序列 的算法有较高的估计精度，但降纸了系统传输效率。(Abstract：Carrier frequency ofset is one of the key problems in OFDM system．Two foundational methods 。cycling prefix—based and training sequence—based algorithms。to estimate OFDM carriers~equency ofset are analyzed．Then it discusses their basic thoughts。implementing methods and simulation resuits． Finally。merits and demerits of every algorithm are supposed．It concludes that the cycling prefix— based algorithm has less complexity and less precision。and that the training sequence—based algorithm has better estimation performance at the cost of transmission efficiency．)

产生16QAM信号，用平方根升余弦滤波器进行脉冲整形，平方根升余弦滤波器产生16-QAM波形波形，画出眼图(16QAM signal of pulse shaping by square root raised cosine filter, the square root raised cosine filter to generate 16-QAM waveform waveform, draw the eye)

This toolbox is used to develop software defined radio for GPS receiver

energy efficiency code for cognitive radio

说明：  汽车诊断协议 基于UDS的网络层源代码(Network Layer Source Code Based on UDS for Automobile Diagnosis Protocol)